Juan A. Acero is an urban climatologist mostly focused on applied research using both measuring and modelling techniques. During the first 10 years of his career, his work focused on atmospheric pollution. He was responsible for a great number of studies related to meteorology and air quality. Later, he started to focus on human biometeorology in urban areas. He has worked in different urban spatial scales, analysing effects of vegetation, and urban morphology on the urban heat. In the last 8 years, he has been part of the Cooling Singapore project, which aims to evaluate mitigation strategies to beat the urban heat and improve thermal comfort. In the following years they will be working on real-time thermal information systems (based on hybrid models).